Changed folder-structure of IDE.Core.Tests
Adapted some IDE.Core.Tests; changed navigation in some service-ViewModels
Changes in ProjectImporter
Moved static methods from CatrobatContext to new service
Adapted ViewModel-Tests
Implemented ShowToastNotification
Fexes in ProjectImporter
Renamed most "Project" to "Program"
More renaming
Renaming and moving constants
Fixed ListPicker background
Fixed NotificationService's toast notification
Merge TFS Changeset 1473